Lubricating system



' Dec. 7 1926.

E. w. D'Avls LUBBICATING SYSTEM 'Filed Deo. 20. 192:3l

frire-wia,"

' lubricant under. pressure compressor being provided' with means forl erence characters will bused for referring Patented Decf7, 1926.

i UNITED.' STATES PATENT OFFICE.

ERNEST W. DAVIS, OF OAK PARK, ILLINOIS, ASSIGNORTO THE BASSICK-MANUFACTUR- ING COMPANY, 0E CHICAGO, ILLINOIS,

A conPonAmioN or DELAWARE.

' nUBRIcAiING'sYsTEM.

{Applicat'ion filed December 20, 1923.' serialiNo. 681,?15.

My invention relates to improvements. in' lubricating systems', and is particularly concerned with improvements invt-hat-typepf lubricating system comprising a plurality.

or' fittings, each otwhich is adapted to be secured to 'a bea-ring ,f the mechanism to `be .Y

lubricated, and a4 compressor for vsupplying to the iittings, the

successively effecting sealed connection with the several fittings.

The objects oi' my'present invention are: First, to provide a lubricating System of the character described, by means of which Sure 1113011 20 pressor ing'device also 'acting as a comprising a reservoir lubricant can be easily and quickly forced 'into the fittings underhigh pressure;

Second, to provideva lubricating system of the character described, in which the res` the 'lubricant is developed y a movement of .the compressor relative to the fitting;

Third, to provide a lubricating system of the character described, in which the com; and the fittings have co-acting parts for placing the lubricant supplied to the fittings under pressure; y

Fourth, to 'provide a systemy such as described above, comprising 'a' sealing element 'for eiiecting a sealed connection betvveenthe compressor and the various ittings, the' sealplunger for p lacing the lubricantviinderpressure;

Fifth, to provide a lubricant compressorl and acylinder com-'. municating therewith, in the .cylinder and capable of producing a vacuum in said cylinder i :withdrawing the lubricant from the reserll (l whichthrough the compressor `forming my improved lubricating system, the fitting voir or supply chamber, and thus` priming the high pressure cylinder.; and

Sixth,v to provide a lubricating system of the character described, which is simple in.

construction, economical to manufacture, and easy to operate. Other objects of my as this description progresses,

ing had. to the accompanying invention will appear reference bedrawings, in

Figure 2 isa central longitudinal section through the coupling and highpressure cyl- Figure' 3 meinber'- and high pressure cylinder' and 4means movable y satisfactory when such'plunger is used. for automatically inder of my improved compressor, this View being ona larger scale than Figure 1;

is a side elevation `of `the cou- P lng intended to show the shape of theentry por'- tion of the bayonet slots; and

Figure 4 is a transverse `section `taken vion line 4:-4 of Figure '2. I i i .i Throughout the several views similar refto similar parts. Y

lThe improved compressor of lubricating system comprises -a lubricant reservoirA or supply chamber 'fori-ned v'of the low pressure 'barrel or cylinder 5,'.the larger end of/whicli. is provided with a 'closure' which my lnovel f l is connected with-the open :end of the barrel by meansof a screw'threaded @connection 7'. This closure is provided with an inwardly extendingjguid'e rod 8 terminating in.- the stopl member Swliich is formed by flattening the inner end ot' the guide rod'8. 'Freelyslidable upon the guide rod V8 is a plunger or., followerv comprising the ieltdiisc 10,. the faceplate- 11, :and 4the follower" plate .12. Tongues 13 are struck from the face plate 11 and bent at an Vangle thereto. y Thevr'ee' ends of these -tongues pass follower plate 12 and the struck up portions or tongues 13. Vhile' my improved' conij p'ressor will ioperate without the plunger just described being present, its operation is 'more The end gofithe barrel 5 opposite the cap 6 is tapered dow-ii to a neck 145 which ternir' nates in a'screw threaded portion liti, Aupon which is threaded the inner end of lcouplino sleeve or Amember 17. The Aontexend of this coupling, sleeve or member is pro-A vided vvith a pair ot'I oppositely disposed bayonet slo'ts 18 for receiving the projec' tions 19 extending from the sides of the 'ttingI 20. 'This 4fitting is provided with a screw threaded v`end 21 adapted' to be screwed -into a journal .and is also'provide with a closureA 23 which is yieldingly.

held in shown.

place by means of a spring not Theiitt-ing just described is awell through 'suitably shaped slotsin the follower plate 12 and are known article of commerce, and further de.--

scriptio thereof 'appears to be unnecessary. I have found :that very good results areA obtained when angle a, that is the angle' `projections 19.

l5 coupling member is larger in diameter than the outer portion to form an annular seat 26.

'4 for limiting the outward ymovement of the cup leather erw/ inch is siidabiy mounted inthe.l inner ortion'of the bore of the coupling vide a. follower 28 which is preferably formed `from 'square stock, the corners-"of which arelrounded as shown at 2.9 (see Fig.l

cation between the borel of the couplingv member 17,v and the opening in the cu 'leather 27. The compression spring 36 is confined betweenthe flangefBO ofthe .follower and the metal washer 37 `which is clampedbetween the shoulder on the,cou

pling member 17 and the end of the neel;

portion 15 of the barrel 5. I prefer to seal The metal washer37 forms aseat for the valve 40,` the stem of which vextends through the washer 37 and terminates in an enlargement or step member 41 which is just small enough to pass through the opening inthe washer 37. A comparatively light compression spring 42 positioned between the metal washer 37 vand the' enlargement 41 provides means :for yieldingly urging thel valve to its closedposition. 'I In the -use of my improved lubricatinA system, the cap 6 is removed vfrom the barred i 5. As the rod 8 is withdrawn, the head 9 engages. the inner face of theplunger and enables the operator in thisA manner to withdrawthe plunger from the barrel- 5. The barrel. 5 is then substantially filled with lu- 'bricant,A preferably grease7 and the piston, rod and cap are then replaced, thus leaving the piston. positioned-at the outer end of the barrel 5. lThe operator then grasps thel outer Iend of the barrel 5 in one hand andl brings the coupling member 17 in such a pbsition relativelytothe fitting 2O that .the

lprojections 19 are received lthe initial por- The inner portion of the@ bore .25 of the.

member 1 For yieldingly holding thecup leather 2.7 in its outermost position, I pi"o this connection by means of a fibre washertions 24 of the bayonet slots. A slight pres sure upon the ca 6 in the direction ot' the' fitting will be su cient to bring the projec- ,tions 19 into line with the inclined portions of the slots 18. The operator thereupon rotates the barrel 5 in the proper directionto "cause the slots 18 to ride over the pins or projections 19. Thiscauses thev coupling l17 to Vmove downwardly over the'fitting'20.` The dimensions of the co-acting portions of the Acoupling member 1 7 and the' fitting 2O are such that-the initial lmovement ofthe 1 coupling member 17 causing the pins to passV through the initial portions 24 of the slots 18, brings the outer endv of the fitting20 in-- to contact with the cup leather 27 so as to establish fa sealed connection between the lcompressor and the fitting. The rotary vmovement of the barrel 5 causing'the cou# pling 174 to'v move downwardly over ythe iit- 95 ting 20, causes the cup leather 27 to beforeed i 'inwardly in the coupling member 17. Vlien "lthe barrel has been turned so thatfurther Y rotationthereof' is prevented by the engagementof thepins or projections 19 with thel inner endsof the slots18, the operator reverses the direction of rotation, thereby bringing thepins or projections19 back to the initial portions of the slots 18. By con-- tinuing the oscillatory movement vof the barrel 5 .the operator can cause repeated recipro- `cation of theeup leather27 in the'boie of the coupling member 17. Each time this cup jleather moves outwardly under-tlie influence' ofl the spring 36,- a vacuum ris created in the in bore of the coupling member 17 which causes lubricant to be sucked into this bore past the Valve 40, and veach time the cup leather 27 is moved in the opposite direction the contentsof the bore of the coupling member 17 105 i coupling member 17 to the barrel 5, and 110-v further inward movement ofthe cup leather causes thea lubricant in the coupling ineinber 17 to be placed under pressure which can easily be in'ade suiiiciently great tocause the lubricant. lto be: iorced through the fitting v2O I115 .and into'V the 'bearingf22, and thereby displace the used lubricant fromwthis bearing. By continuing-the oscillations of the barrel 5 a comparatively large quantity of lubricant can be discharged undcrhigh pressure in a very short timer i The outer vend of the rod 8 is loosely riveted to the4 cap 6 so as to permit access of air to the .outer end of the barrel 5 to replace theilubricant as it is withdrawn lfrom this barrel. It will, of course. be understood that the piston in the barrel --5 moves inwardly under atmospheric pressure` thus created in the outer end of the barrel 5.

. l It will, of course, be understood that when I 1,609,864:A y v aA one tting has received ya'sulicient quantity the end of said fitting lduring relative axial ot' lubricant the compressor -can' be removed movement otsaid cylinder and tting, a iirstfrom itfand transferred to the next fitting check valve between said barrel and cylinder and this operation yrepeated until -allI ot the anda second. check valve in the end of said fittings of a given mechanism have been fitting, the passage between said valves being 70 supplied with lubricant. It, will, of course, unobstructed, whereby said fitting operates v.be understoodthat if desired, the barrels during inward telescoping movement to comcan be lmade articles ot' commerce and sold press and expel lubricant-.trapped by said filled with grease so that' all that it is nectirstmentioned check valve, and during out'- essary for the operator to do is to connect ward movement to ,suck more lubricant into 75 this barrel or container with the ,coupling said cylinder.4 f

member 17 and then proceed as outlined 4. -A lubricant compressor comprising a above. barrel, a coupling cylinder communicating While I have described the preferred ein- 'with said barrel, a check valve between said i5 bodiment ot my invention, itis to be clearly barrel and said cylinder, a piston slidable in S0 y understood that ymy invention is notlimited saidv cylinder and havingan unobstructed to thcsedetails but is capable ot other ada-poutletpassage, vmeansvtor resiliently holding tations and modifications in the scope ot the said piston .near the outer end of said cylinappended claims. g der, and means for drawing the end of a tuv V 20 Having thus described my invention, what bular receiving fitting into said cylinder to 85 I claim is'. 1 move said piston away from the end of said i l.A A lubricating system comprising the cylinder, said piston including' means fior combination with a tting .having projecestablishing a contact seal with the end of tions extending from opposite sides thereof, sai-d fitting.

i "5 ot 'a compressor comprising a barrel having 5. A lubricatingsystem comprising a bar- 90 a- -cap at one end provided with an inwardly rel, a cylindercommunicating with said barextending guide rod, a piston' slidably rel, a check valve between said barrel and mounted Aupon ,saidv guide* rod, a coupling said-cylinder, a piston slidable'in said'cylin` member rigidly secured to the opposite end der and havingl an unobstructed outlet pasot said barrel, said coupling member having sage, means for resiliently holding said 'pis- 95 oppositely disposed inclined cani slot-s exton near the outer end of said cylinder, and .tending inwardly trom its outer end, and a a tubular receiving fitting adapted to enter bore forming aliigh pressure cylinder, a.- cup 'said Cylinder and. push said piston away leather slidiably mounted in said bore, means from the end` of said cylinder, 'said fitting for-yieldingly urging said cup leather out-` and piston including means for maintaining'lo wardly, an -outwardly opening check valve a seal'during movement ofthe piston.; located between said bore and said barrel, 6. A lubricating System comprising the means for yieldiiigly holding said' checkl ccmbination with a fitting having projecvalve in -its'c-losed position, said fitting havtions extending tromopposite sides thereof, W ing a check valve-opening into said fitting, of a compressor comprising a barrel having 10.1 said cup leather having a continuously open a cap at one end providedwvith' an inwardly discharge passage-way therethrough. extending guide rod, a piston sldably mount- 2. A lubricating system comprising a fitedl upon said guide rod, a coupling member ting having aprojection extending from one ri'gi ly secured-to the opposite end of said side thereof,"and a compressor comprising a barrel, saidcoupling memberliaving oppo- 110 barrel having a `piston slidably mounted sitely disposed inclined cam slots extending therein, a coupling-memberiigidly secured' inwardly from vits outerv end, and a bore to oi'i'eend of said barrel, said coupling ineinforming a high pressure cylinder, a cup ber having a bore` communicating with said leath-er slidably mounted iii said bore, means 5U barrel anda -cam slot extending inwardly for yieldingly urging said cup leather out- 115 from its outer end, an apertured pistonslid wardly, an outwardly opening check valve ably mounted in said bore, the outerface ot located between said -bore and said barrel,

Isaid piston being adapted. to 'make `sealed and means tor yieldingly holding said check contact with the tree end of said Ifitting, valve in its closed position.

means for yieldingly holding said piston in, 7.f A lubricating system comprising a fit- 12.0

its outermost position, and meansfor preting havin a projection extending from one venting tlie return. ilow of lubricant from side thereo and afconipresor comprising a said bore to said barrel, said piston aperture barrel having a piston slidably mounted being open and unobstructed. y therein, a coupling member rigidly secured 3. The combination with la receiving itto one end ot said barrel, said coupling incin- 125 ting, ot a compressor comprising a lubricant ber having a bore communicating with said, containing barrel, acylinder receiving lubribarrel and a cam`- slot extending inwardly cant' from said b arrel and telescoping-over Afrom its outer end, an apertured piston slidsaid fitting, means yorniaintaininga seal ably mounted in said bore, the outer facc- 5 between the side wall ot said cylinder and ot said piston being adapted to make sealed 130 j@ said piston I i havin contact with the free end of said fitting, means for yieldingly holding said piston in its outermost position, and means for`preventing the return flow of lubricant from s said bore-to said barreh if A '8. -A lubricating systein'comprising. a fitting and a compressor for supplying lubricant thereto, said compressor comprising a barrel and a high pressure cylinder commu- .10sA nicating with said barrel, a piston slidably*- mounted in said high pressure cylinder, and co-actin'g means on said high pressure cylinderpand said fitting for reciprocating 'saidn l piston by oscillating said barrel about its Vaxis relatively to said fitting.

l). A lubricating system comprising .a' fitting and 'a compressor for supplying lubri-` cant thereto, said` compressor comprising. a barrel' and a high pressure; cylinder communicating with said barrel, a piston slidably mounted in said. high pressure cylinder, and yco-acting meanson said high pressure cylinder and said fitting for. reciprocating said piston by oscillating saidV barrel relatively 15 to said fitting.

10. A lubricant compressor comprising a vlubricantV reservoir, a cylinder commun. cat-ing with said reservoir, an outwardly opening spring pressed valve controlling communication between said reservoir and said cylinder, a' gasket slidably mounted in the outer end of said cylinder, and a cam on saidcylin'der for co-acting withv means 'for reciprocating' said gasket.

ll, 'l`h e combination, with a fitting, of means 'for supplying lubricant thereto, comprising a .compressor having a cylinder, a` piston slidable therein, and co-acting means jon said fitting and cylinder for actuating when said cylinder is moved relatively to said fitting. 'i 12. rIlle' combination with a fitting, of means forsupplying lubricant thereto, comprising a compressorv having a' cylinder, al piston slidable therein, andeo-acting means on said fitting and cylinderfor actuating said pistonlwhen said cylinderis moved relatively to saidfitting, one side of said piston Ig `means for making sealed contact, with said fitting The"com`b ination with a fitting, of a compressor, said compressor and fitting comprising eri-acting means for ,placing the lu-A K bricant in said compressor under 4pressure 5 by moving said compressor relatively to said fitting, said'co-acting means including means for effecting a sealed connection between said compressor and said fitting. v f vlil.. The combination with a Ifitting having'l a projection extending from one side the're` l offot a compressor :torsupplying lubricant thereto, said compressor comprising a cylinder, means for 'supplying lubricant tov said` cylinder, an outwardly opening cheek valve between said last named means and said cyl joutwardly,

valve located- Iits outermost position,

inderra piston 1`slidable in said cylinder, and o means onsa'id compressor for cofaeting with said` projection to reciprocatesaid piston, upon osillationof said-cylinder.

y' ;-15. The combination with a-'fittinv having a projectionextending' from one side there.-

of,of a compressor for 'supplying lubricant i thereto, said 'compressori-comprising acylinder having an open end for receiving said '.16. The-combination, with a fitting, of a I com presso-r; said compressor and fitting comprising co-actmgmeans for placing lubricant' in said compressor under pressure by oscillating said compressor relatively to said fitting.

y 17.`A lubricating system comprising the combination with a fitting having projections extending from opposite sides thereof, 'of a compres'sor comprising a barrel having a cap at one end provided with an inwardly extending guidel rod,

a. piston slidably i mounted upon saidguide rod, a coupling member rigidly secured to the opposite end of said barrel, said coupling member hav-y ing oppvositely disposed inclinedv camy slots extending inwardly from its outer end, and

a bore forming a high pressure cylinder, aj i i cup leather slidablymounted in said bore,

meansfor yield-ingly urging said cup leather an outwardly opening cheek rel, and means for yieldingly holding said check valve in its closed position;

l18. A lubricating system comprising a fitting having a projection extending Vfrom one side thereof, and a compressor comprising a between said bore and said bar?. f

los

barrel Vhaving a piston slidably `mounted therein, a Icoupling member rigidly secured to one end of said barrel, said coupling member having a bore communicating with said vbarrel and a 'Camslot extending inwardly from its outer end, an apertur'ed piston slidably mounted in' said bore, the `outer Yface of said piston being adapted contact with the free end ofv sali dv fitting, means for yieldingly holding said pistonr'in lid means Jfor preventing the return low of lubricant from said bore to said'barrel. l'

19. The combinan@ with a seing, bis.

fitting hav- ,i

compressor, said compressor' and ing'gnick detachable lco-actimg. placing the lubricant in saidunder pressure. by rotating said compressor relatively to saidfitting;`

means for The combination with a' fitting, of a telescoping compressor having a sleeve 'for removably over said fitting, and compress- 4Jing mechanism n'said compressor operated by telescoping said sleeve over said fitting.

to vmake, sealed compressor y i lao ` barrel, a cylinder secured to vsaidr cam surfaces,

21. The combination with a' fitting, of a compressor having a lubricant containing barrel, said compressor and fitting comprising co-acting quick detachable means for placing the lubricant in said compressor under pressure by rotating said barrel relatively to said fitting.

22. The combination with a receiving, fitting,l of a compressor comprising a lubricant containing barrel, a cylinder receiving lubricant from said barrel and telescoping over said fitting, means for maintaining a seal between the side wall of' said cylinder and the end of said cylinder Eduring relative axial movement of said cylinder and fitting, and a check valve between said barrel and cylinder, whereby during inward telescoping movement said fitting operates as a piston to compress and expel lubricant trappgd said check valve. A

The combination with afitting having cam surfaces, of a compresser, `comprising a barrel an communicating therewith, the outer end of said cylinder being provided with cam surfaces for coacting with the cam surfaces on said fitting,a cup leather-.slildable in said cylinder', a displacer having one end extending into said cup leather, a spring for urging said cup leather outwardly, and4 an outwardly opening valve between said barrel and said cylinder.

24. The combination with a` fitting having of a compressor comprising a barrel, a cylinder secured to said barrel and communicating therewith, said v'fitting and the outer end of said cylindrilieing provided with coacting means-:for advancing said cylinder onto said `fitting when `said cylinderis rotated relatively to said fitting, a piston slidable in said cylinder, wardly' opening valve between-said barrel and said-cylinder.

25. The combination with a fitting having acam surface, .of a detachable comd reservoir* from and an out-` a cam surface for co-acting with the cam surface on said fitting, and means actuated by-said co-acting cam surfaces for placing lubricantin said compressor under pressure. Q6. A lubricating system comprising a fitting permanently mounted on a device to be lubricated, a portable compressor comprising an open ended compression cylinder. means for forcing said cylinderv over said fitting to compress the lubricant, and annular sealing means in said cylinder riding on. the end of said fitting to form with sai fitting a tightly seal-ed plunger piston.

27. The combination with a fitting, of a compressor comprising a cylinder for telfescoping over said fitting and a reservoir back of said cylinder, means actuated by relative twisting movement of Asaid fitting and cylinder Jfor compressing -lubricant in said cylinder and forcing itinto said fitting,

pressor having and check valve means forv protecting said' the pressurein said cylinder.

Q8. The combination with v-a fitting, of a compressor comprising a'cylinderfor engaging said fitting and a reservoir back of said cylinder, means actuated by 'relative twisting movement of said' fitting and cylinder for compressing lubricant insaid cylinder and 'forcing it into said fitting, andchecl: valve means for protecting saidv reservoir from the pressure in said cylinder.

29. The combination with a fitting, of a compressor comprising" a 'cylinder for engaging said fitting andra-reservoirbaclr of said cylinder, means actuated by relative twisting movementof said fitting and cylinder for compressinfY vlubricant in said cyl-l inder and forcing it in'to said fitting-'and means for ,protecting said reservoir from the pressure in said cylinder.

In witness whereof, I my name this ERNEST w. Davis.

hereunto subscribe 13th day of December, 1923. 

